Tree 通过父id找所有子节点

Posted 2020-10-17 我把所有的财富都放进博客里了，想要就进来拿吧

//TableName 表名  ParentID 父节点

; WITH ret 
AS(SELECT * FROM SysBest_Role
WHERE ID = Parentid
UNION ALL
SELECT t.* FROM
TableName t INNER JOIN ret r ON t.ParentID = r.ID) 
SELECT * FROM ret w